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CRT Catalogue Pull-out Feature : Crop Feature - Winter 2013
YP AG agronomist, Justin McCormack, says a double in-crop knockdown strategy that included Bayer’s Velocity® Selective Herbicide worked extremely well for Yorke Peninsula grain growers last season. The Maitland based agronomist said growers found their cereal crops came under siege from bifora after a reasonably large lentil season in 2010. The weed scenario was set up because relatively few bifora control options exist for use in the lentil phase. With suppression given by existing products rather than control, the weed was able to set a lot of seed in 2010. “Bifora has become a major broadleaf weed problem for us. It tends to be difficult to keep out of the lentils and it’s been a thorn in the side of growers for a number of years now,” said Justin. “In recent years we’ve been given better tools to deal with bifora in cereals. This is very timely because with the better seasons and more lentils being planted, there seems to be more and more of it getting through.” “So growers need to be smarter with how they manage bifora, particularly in the cereal phase where there are now good options.” “In the last year or two, we’ve been gaining confidence with what Velocity can do. Certainly, from the trial work Bayer has been doing and what I’ve seen firsthand, it’s been pretty impressive.” “Going into 2011, our bifora control strategy was to look at what we could do with a double in-crop knockdown.” “By that I mean come in with Velocity early as the first line of defence and then, depending on the situation and weed pressure, look at going back later with Affinity® and MCPA.” “I t ’s proven to be an excellent strategy. Growers who’ve tried it have been impressed, firstly with Velocity used early and what sort of job that’s done and secondly with its safety on the crop.“ “Coming back to do the cleanup job with Affinity and MCPA, they found weed numbers had been markedly reduced, even though bifora had emerged after the Velocity application.” “O f course, a thick matt of weeds was never going to be completely controlled by any one product simply because of the plant coverage issues. Some weeds were never contacted with the spray or enough spray. In heavy weed populations a second spray was always going to be necessary.” Justin said other weeds Velocity has proven to be strong on include milk thistle (sowthistle), bedstraw, wireweed, shepherds purse, Indian hedge mustard, fumitory and prickly lettuce. With Indian hedge mustard and prickly lettuce populations in his area showing resistance to the group B herbicide group, Velocity provides an ideal rotational tool. He said good feedback about the crop safety of Velocity was that there was no feedback. Justin said Velocity could be tank mixed with Ally® if growers have a problem with mignonette. Lontrel® could be added if capeweed were very large, outside the Velocity label weed stage. Velocity selective broadleaf herbicide worked extremely well for Yorke Peninsula grain growers last season on bifora and a range of other broadleaf weeds according to Justin McCormack from YP AG. Velocity® is a Registered Trademark of Bayer. In-crop double knock a winner on bifora Key Weeds Controlled Intervix offers comprehensive control of many problem grass and broadleaf weeds including barley grass, brome grass, volunteer cereals and wireweed. Refer to the product label for the extensive list of weeds controlled. Control and suppression of a vast range of problem weeds, including: Brome Grass London Rocket Barley Grass Paterson’s curse Marshmallow Saffron Thistle Wireweed Turnip Weed Doublegee* Wild Radish Indian Hedge Mustard Wild Oats *Surviving plants will generally be retarded and will not compete with the crop Follow Crops – following application of Intervix The following minimum re-cropping intervals (months after application) should be observed. Months after application 0 months 10 months 34 months Clearfield canola Clearfield wheat Clearfield Plus wheat Clearfield barley Chickpeas, faba beans, field peas, lucerne, lupins, oats, pasture legumes, vetch, triticale#, barley# (except Clearfield barley), wheat# (except Clearfield Plus wheat and Clearfield wheat) All other crops including conventional and other herbicide tolerant canola # Intervix Herbicide is only available under the Clearfield AgriCentre Agency system, administered by Crop Care. Please contact your local CRT store or Crop Care for further information or to confirm your Intervix Herbicide requirements for 2013. CRT INFO ACTIVE
Crop Feature - Autumn 2013
CRT Spring 2013 - Tech Update